Battling obesity at age 4

Lu Zhihao, right, sleeps during a noon break at a kindergarten in Foshan, Guangdong province on Tuesday, March 29.

Joe Tan / Reuters

Lu Zhihao walks with his parents on a street in Foshan on Tuesday.

Young Lu Zhihao weighs 136 pounds at 3 feet 7 inches tall. Reuters reports that Lu put on weight dramatically since his appetite increased when he was 3 months old. His worried parents took him to several hospitals, but the reason for his obesity remains unknown, though it is possibly due to his dietary habit, according to local media.